[User Question] How to create a backup of an LVM based maschine without wasting space

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Hey all,

I have a simple user question. I have a few LVM based KVM guests and wan't to backup them to files. The simple and nasty way would be to create a complete output file with dd, which wastes very much space. So I would like to create a backup of the LVM to a file which only locates the space which is used on the LVM. Would be create when the output file would be something like a qcow2 file which could be also simply startet with KVM.

Is this supported by qemu_backup or what would be the best way to do this?

PS: Sorry for my bed english

Best Regards
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